# What is 20% of 50? — Percentage Calculator

> Calculate 20% of 50 instantly — the answer is 10. Plus percentage change, percentage difference, and add or subtract a percent, with step-by-step formulas.

- **Answer:** 10
- **Category:** Math
- **Interactive calculator:** https://youcalc.com/en/math/percentage/20-percent-of-50/
- **Price:** Free, no sign-up required
- **Full calculator:** [Percentage Calculator](https://youcalc.com/en/math/percentage/)
- **Pre-filled inputs:** `of=20%2C50`

## Overview

20% of 50 is 10. Convert the percentage to a decimal (20 ÷ 100 = 0.20) and multiply by the whole (0.20 × 50 = 10). Use the calculator below for any percentage of any number, plus percentage change and percentage difference.

## Method

Each mode uses a direct formula. "What is X% of Y" computes (X / 100) × Y. "X is what % of Y" computes (X / Y) × 100, requiring Y ≠ 0. Percentage change is ((new − old) / |old|) × 100, signed, requiring the old value ≠ 0. Percentage difference is |A − B| / ((|A| + |B|) / 2) × 100, order-independent, requiring the two values not both be zero. "Add / subtract a percent" gives base × (1 + p / 100) and base × (1 − p / 100). All formulas follow standard mathematical definitions as documented on MathIsFun.

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## Sources

- https://www.mathsisfun.com/percentage.html
- https://www.mathsisfun.com/numbers/percentage-change.html
- https://www.mathsisfun.com/percentage-difference.html

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Interactive version: https://youcalc.com/en/math/percentage/20-percent-of-50/ · From YouCalc — https://youcalc.com